Skip to main content
×
Home
    • Aa
    • Aa

Mapping the Hidden Universe: The Galaxy Distribution in the Zone of Avoidance

  • Renée C. Kraan-Korteweg (a1) and Sebastian Juraszek (a2)
Abstract
Abstract

Due to the foreground extinction of the Milky Way, galaxies become increasingly faint as they approach the Galactic Equator creating a ‘zone of avoidance’ (ZOA) in the distribution of optically visible galaxies of about 25%. A ‘whole-sky’ map of galaxies is essential, however, for understanding the dynamics in our local Universe, in particular the peculiar velocity of the Local Group with respect to the Cosmic Microwave Background and velocity flow fields such as in the Great Attractor (GA) region. The current status of deep optical galaxy searches behind the Milky Way and their completeness as a function of foreground extinction will be reviewed. It has been shown that these surveys—which in the mean time cover the whole ZOA (Figure 2)—result in a considerable reduction of the ZOA from extinction levels of AB =1m.0 (Figure 1) to AB =3m.0 (Figure 3). In the remaining, optically opaque ZOA, systematic HI surveys are powerful in uncovering galaxies, as is demonstrated for the GA region with data from the full sensitivity Parkes Multibeam HI survey (300°≤l≤332°, ∣b∣≤5°.5, Figure 4).

    • Send article to Kindle

      To send this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Mapping the Hidden Universe: The Galaxy Distribution in the Zone of Avoidance
      Available formats
      ×
      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about sending content to Dropbox.

      Mapping the Hidden Universe: The Galaxy Distribution in the Zone of Avoidance
      Available formats
      ×
      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about sending content to Google Drive.

      Mapping the Hidden Universe: The Galaxy Distribution in the Zone of Avoidance
      Available formats
      ×
Copyright
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

J. A. Cardelli , G. C. Clayton , & J. S. Mathis 1989, ApJ, 345, 245

M. Hudson , & D. Lynden-Bell 1991, MNRAS, 252, 219

A. Kogut , C. Lineweaver , G. F. Smoot , et al.1993, ApJ, 419, 1

T. Kolatt , A. Dekel , & O. Lahav 1995, MNRAS, 275, 797

R. C. Kraan-Korteweg 2000, A&ASS, 141, 123

R. C. Kraan-Korteweg , P. A. Woudt , V. Cayatte , et al.1996, Nature, 379, 519

O. Lahav 1987, MNRAS, 225, 213

G. Lercher , F. Kerber , & R. Weinberger 1996, A&ASS, 117, 369, [B1]

C. A. Pantoja , D. R. Altschuler , C. Giovanardi , & R. Giovanelli 1997, AJ, 113, 905 [A]

M. Saito , A. Ohtani , A. Baba , et al.1991, PASJ, 43, 449 [C1]

W. Saurer , R. Seeberger , & R. Weinberger 1997, A&ASS, 126, 247, [B1]

D. J. Schlegel , D. P. Finkbeiner , & M. Davis 1998, ApJ, 500, 525

R. Seeberger , & W. Saurer 1998, A&ASS, 127, 101 [B1]

R. Seeberger , W. Saurer , & R. Weinberger 1996, A&ASS, 117, 1 [B1]

R. Weinberger , M. Gajdosik , & C. Zanin 1999, A&ASS, 137, 293 [B5]

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Publications of the Astronomical Society of Australia
  • ISSN: 1323-3580
  • EISSN: 1448-6083
  • URL: /core/journals/publications-of-the-astronomical-society-of-australia
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Altmetric attention score